Tuning Which to choose for wildcat mk3?

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I’ve noticed there’s a few more bits available now since I last ordered bits for my wc mk3 about a year ago

i intend to use both monster redesigned pellets and jsb knockout slugs in my .22 wc

I’ll be ordering huma reg with plenum, but which of these three bits should I also be ordering? 
 
Pretty sure the new Wildcat MKIII's and Mavericks already have the one on the left. The one on the right is the best option. I have 3 of three of the middle version for my Mavericks and I did have one slug probe bent on me. The one plus to the middle option is the hammer weight. Both of my Mavericks 22cal (Compact and Sniper) needed a heavier hammer weight to properly run the MRD's and KO's. I ordered those from FX and they sent them to me for free. Plus if yours has the old transfer port and doesn't have the new version with the slug port, that will give you some extra fps without having to turn the gun up. Also either slug probe will give you extra fps. I think your MKIII has 58 foot pound potential from what I hear on AGN. I love the look of the Wildcat MKIII.